Proportions, rates and ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division. It shows how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: as a fraction (e.g., 2/3), with a colon (e.g., 2:3), or with the word 'to' (e.g., 2 to 3).

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you solve a proportion?

Back

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units. For example, speed is a rate that compares distance to time.

Front

If a recipe requires 2 cups of milk for every 3 cups of flour, what is the ratio of milk to flour?

Back

The ratio of milk to flour is 2:3.

Front

If you have 4 apples, 2 bananas, and 5 pears, what is the ratio of pears to all fruit?

Back

The ratio of pears to all fruit is 5:11.

Front

If you earn $15 every 3 weeks, how much will you earn in 5 weeks?

Back

You will earn $25 in 5 weeks.

Front

What is the first step to find the missing value in a proportion?

Back

The first step is to set up the proportion correctly and identify the known values.

Front

How do you find a missing term in a ratio?

Back

To find a missing term in a ratio, you can set up a proportion and solve for the unknown value.